PHP · Theory

crc32()

Theory

190/352

crc32()

crc32() is a PHP topic. In plain words you use it for a short crc32 example in a college portal page. Don’t start with a slogan — start with that picture.

Smallest example: the smallest crc32 example you can type. Type it, run it, and say what you see. If you can do that from memory, you know crc32().

From the example next to this theory — crc32(): scores array, print avg, then high marks.

Trap — only saying “crc32” with no example. Fix that before you talk about advanced PHP.

Viva — what is crc32()? Then show the smallest crc32 example you can type. Then name the trap.

Exam tip

What is crc32()? Show this: the smallest crc32 example you can type. Trap: only saying “crc32” with no example.

Example

<?php
// crc32()
$scores = [80, 90, 70];
$avg = array_sum($scores) / count($scores);
echo "avg=" . number_format($avg, 1) . "\n";
foreach ($scores as $s) {
  if ($s >= 80) echo "high: $s\n";
}

crc32(): scores array, print avg, then high marks. Say the output.

Short notes

Defcrc32() — a short crc32 example in a college portal page.
Rulethe smallest crc32 example you can type
Traponly saying “crc32” with no example
Usea college portal page

PHP · Theory

crc32()

← All stacks

Theory

190/352

crc32()

crc32() is a PHP topic. In plain words you use it for a short crc32 example in a college portal page. Don’t start with a slogan — start with that picture.

Smallest example: the smallest crc32 example you can type. Type it, run it, and say what you see. If you can do that from memory, you know crc32().

From the example next to this theory — crc32(): scores array, print avg, then high marks.

Trap — only saying “crc32” with no example. Fix that before you talk about advanced PHP.

Viva — what is crc32()? Then show the smallest crc32 example you can type. Then name the trap.

Exam tip

What is crc32()? Show this: the smallest crc32 example you can type. Trap: only saying “crc32” with no example.

Example

<?php
// crc32()
$scores = [80, 90, 70];
$avg = array_sum($scores) / count($scores);
echo "avg=" . number_format($avg, 1) . "\n";
foreach ($scores as $s) {
  if ($s >= 80) echo "high: $s\n";
}

crc32(): scores array, print avg, then high marks. Say the output.

Short notes

Defcrc32() — a short crc32 example in a college portal page.
Rulethe smallest crc32 example you can type
Traponly saying “crc32” with no example
Usea college portal page

crc32()

Example

Short notes

Questions

crc32()

Example

Short notes

Questions